The question of material mark-up comes up quite often, so i thought, a chat i had with a gent, that does estimates for a large construction company was intresting, i asked how they survive on a 10% mark-up on material, and he explained how they mark-up, they start with the price, they paid for the item, then add the burden expenses, to that item, these expenses are, the cost of purchasing, handling, and billing, and any taxes, then they add the 10% to the item, so in total some items may be 100%, or as high as 300%, he said items, such as pipe, and fixtures can carry a much higher mark-up, then cable and wire.
So it appears, it's those hidden costs, are what you need to consider when marking-up.
